GETRESUID(2) Linux Programmer's Manual GETRESUID(2)NAME
getresuid, getresgid - get real, effective and saved user/group IDs
SYNOPSIS
#define _GNU_SOURCE
#include <unistd.h>
int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
DESCRIPTION
getresuid() returns the real UID, the effective UID, and the saved set-user-ID of the calling process, in the arguments ruid, euid, and
suid, respectively. getresgid() performs the analogous task for the process's group IDs.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EFAULT One of the arguments specified an address outside the calling program's address space.
VERSIONS
These system calls appeared on Linux starting with kernel 2.1.44.
The prototypes are given by glibc since version 2.3.2, provided _GNU_SOURCE is defined.
CONFORMING TO
These calls are nonstandard; they also appear on HP-UX and some of the BSDs.
SEE ALSO getuid(2), setresuid(2), setreuid(2), setuid(2), credentials(7), feature_test_macros(7)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2007-12-28 GETRESUID(2)
Check Out this Related Man Page
GETRESUID(2) Linux Programmer's Manual GETRESUID(2)NAME
getresuid, getresgid - get real, effective and saved user/group IDs
SYNOPSIS
#define _GNU_SOURCE
#include <unistd.h>
int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
DESCRIPTION
getresuid() returns the real UID, the effective UID, and the saved set-user-ID of the calling process, in the arguments ruid, euid, and
suid, respectively. getresgid() performs the analogous task for the process's group IDs.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EFAULT One of the arguments specified an address outside the calling program's address space.
VERSIONS
These system calls appeared on Linux starting with kernel 2.1.44.
The prototypes are given by glibc since version 2.3.2, provided _GNU_SOURCE is defined.
CONFORMING TO
These calls are nonstandard; they also appear on HP-UX and some of the BSDs.
SEE ALSO getuid(2), setresuid(2), setreuid(2), setuid(2), credentials(7), feature_test_macros(7)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2007-12-28 GETRESUID(2)
The UNIX and Linux Forums have a number of active members that have published books or papers related to shell programming and scripting. You can check out their publications here:
Link Removed
Please note, as you can imagine, our forum experts can be quite busy! You will get a response... (0 Replies)
Emergency UNIX and Linux Support !! Help Me! Forum (Request Urgent Help)
README FIRST: How to Request Emergency or Urgent Help:
You may post emergency work-related questions in the emergency forum. To post in this forum you will need to use your Bits. All questions answered on a "best... (0 Replies)
Homework Help:
On Posting Questions:
Any and all high school and undergraduate homework assignments or textbook style exercises for which you are seeking assistance are to be posted only in our Homework & Coursework Questions area--not in blogs, visitor messages, PMs, or the main technical... (0 Replies)
Dear Forum Members,
The UNIX and Linux Forums are working directly with the Red Cross to provide ad banners on our site to support Earthquake and Tsunami Relief in Japan. Registered users do not see these banners. However, if you wish to contribute directly on behalf of yourself and the... (8 Replies)
How to Use Code Tags in The UNIX and Linux Forums
Developer: This video tutorial was created by scott for forum users. Everyone should use code tags when posting code and command line logic in the forums.
cPF45jjWe7Q
A full list of BB codes is available here. (8 Replies)
RULES OF THE UNIX AND LINUX FORUMS
For the latest version of the community rules (the official community rules page), please visit here.
No flames, shouting (all caps), sarcasm, bullying, profanity or arrogant posts.
No negative comments about others or impolite remarks. Be patient. No... (1 Reply)
I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning .
Does this mean that it will run on any shell ?
Is it a good practice to create scripts (even ad-hoc ones) without shebang ? (16 Replies)
Having spent a lot of time over the past year taking a legacy vBulletin site (this forum) and making the site responsive on mobile; I've happy with the results; but it will soon be time to move on.
Basically, at our core, we are a LAMP (Linux, Apache2, MySQL and PHP) site, and vBulletin was... (6 Replies)
Here are some answers to some of the recent questions I have received about UNIX.COM. So, I thought I would take time to answer them here in this post:
Is it expected that the original poster "thank" everyone who responds to his / her discussion thread?
It is always a good practice in all... (7 Replies)
By special request, and long overdue, I have updated our "code tags" video and so now we have:
How to Use Code Tags and Format Posts @UNIX.com in 4K
https://youtu.be/4BuPvWJV__k (3 Replies)
Here is a quick EOY report for 2019.
2019 has been a year of "downward trend reversal" for UNIX.com. In fact, if we compare total Google search impressions from the peak days in December 2019 to the peak days in mid December 2018, traffic is up 43% percent. That is a very respectable growth... (0 Replies)